Hi there,
I'm having outbound SMTP communication problems with a few select external
Exchange email servers. When my Exchange server tries to pass an email via
SMTP to these external companies I get an error message "421 5.5.2 syntax
commandline too long". My Exchange server is Ex 2k SP3. This also happened
with another company a couple of weeks ago, they uninstalled their ISA and
suddenly it started working again, Not sure if it's a coincidence. The
company I'm currently having difficulties sending emails to, say they are
using ISA as well as a Gateway MailFilterer product. Plse help - here are the
SMTP logs and SMTPDIAG results.
2005-06-30 12:04:24 210.54.1.82 OutboundConnectionResponse SMTPSVC1
MyMailServer - 25 - -
220+ClientsMailServer+Microsoft+ESMTP+MAIL+Service,+Version:+6.0.3790.1830+ready+at++Fri,+1+Jul+2005+00:04:17++1200+ 0 0 122 0 31 SMTP - - - -
2005-06-30 12:04:24 210.54.1.82 OutboundConnectionCommand SMTPSVC1
MyMailServer - 25 EHLO - ClientsMailServer 0 0 4 0 31 SMTP - - - -
2005-06-30 12:04:24 210.54.1.82 OutboundConnectionResponse SMTPSVC1
MyMailServer - 25 - - 421+5.5.2+Syntax+error+(command+line+too+long) 0 0 46 0
47 SMTP - - - -
2005-06-30 12:04:24 210.54.1.82 OutboundConnectionCommand SMTPSVC1
MyMailServer - 25 QUIT - - 0 0 4 0 47 SMTP - - - -
Checking MX servers listed for client@abc.com.
Connecting to mail.aftermail.com [203.XXX.XXX.XXX] on port 25.
Warning: Expected "250". Server does not support EHLO.
Sending data to the server failed. Error: 10054
Failed to submit mail to mail.abc.com.
Connecting to office.abc.com [203.XXX.XXX.XXX] on port 25.
Warning: Expected "250". Server does not support EHLO.
Failed to receive data. Error: 10054
Sending data to the server failed. Error: 10054
